2022-03-21
大(da)容量软(ruan)包锂(li)电池不(bu)仅要(yao)设(she)计(ji)保(bao)(bao)护(hu)(hu)电路,还要(yao)设(she)计(ji)防止过热(re)和(he)过压的(de)内(nei)部保(bao)(bao)护(hu)(hu)装置。常见的(de)大(da)容量软(ruan)包锂(li)电池保(bao)(bao)护(hu)(hu)装置如下:
1、排气板/排气管离开标签(qian):大容量软(ruan)包锂电池(chi)内的压力过大,主要是异常(chang)发热或过度(du)充电导(dao)致,通过排气板能释放气体,提高(gao)安全性。
2、正温(wen)度(du)系数(PTC):PTC作(zuo)为电流(liu)熔断器(qi)和热熔断器(qi),当电流(liu)过大时(shi),PTC的(de)电阻增加,导致发热增加。选择(ze) PTC 的(de)电阻,使其在预定电流(liu)下跳闸。
3、分离器(qi):当分离器(qi)温(wen)度(du)达到(dao)规定温(wen)度(du)时,孔隙被材料熔化堵(du)塞(sai),从而(er)阻(zu)止(zhi)电(dian)流在电(dian)极(ji)之间流动。
4、温度保险丝:大容量软包锂电(dian)池配备(bei)保险丝,在故(gu)障时起到限制电(dian)流的(de)作用。
大容量软包锂电(dian)(dian)池的保护电(dian)(dian)路(lu)一般安(an)装在电(dian)(dian)池组内(nei)部,由(you)集成(cheng)电(dian)(dian)路(lu)组成(cheng),用于监控电(dian)(dian)池并防止过(guo)充、过(guo)放和过(guo)电(dian)(dian)流(liu)。
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铝空气电(dian)池(chi)(chi)(chi)的(de)特点:1、比(bi)(bi)(bi)能高(gao),电(dian)池(chi)(chi)(chi)的(de)理论比(bi)(bi)(bi)能可达2290Wh /kg。目前实际已经达到300~ 400Wh /kg,远高(gao)于各种(zhong)电(dian)池(chi)(chi)(chi)的(de)比(bi)(bi)(bi)能。虽然电(dian)池(chi)(chi)(chi)的(de)比(bi)(bi)(bi)能量是相(xiang)似的(de),但其较差的(de)安(an)全性使其不能用于动力电(dian)池(chi)(chi)(chi)。2、比(bi)(bi)(bi)功率适中,可达50~ 200W /kg。这
直接作为正极(ji)材(cai)料(liao)的(de)金属锂(li)(li)具有(you)很(hen)高的(de)可逆(ni)容量,其理(li)论(lun)容量高达3862mAh.g1,是(shi)石(shi)墨材(cai)料(liao)的(de)十倍以(yi)上,价格也很(hen)低。它(ta)被(bei)认(ren)为是(shi)新一代锂(li)(li)离子电(dian)池具吸引力的(de)阳极(ji)材(cai)料(liao),但(dan)它(ta)会产生枝晶锂(li)(li)。利用(yong)固(gu)体电(dian)解质作为阳极(ji)材(cai)料(liao)是(shi)可能的(de)。此外,聚(ju)合物(wu)锂(li)(li)电(dian)池的(de)固(gu)体电(dian)解质可以(yi)
应运(yun)而生的共享充(chong)(chong)(chong)电(dian)(dian)(dian)宝,满足了消(xiao)费者(zhe)(zhe)(zhe)(zhe)的应急之需。但同时(shi),不(bu)(bu)少(shao)消(xiao)费者(zhe)(zhe)(zhe)(zhe)反(fan)映(ying)共享充(chong)(chong)(chong)电(dian)(dian)(dian)宝的服务并不(bu)(bu)尽(jin)如人意。在智能手机不(bu)(bu)离手的时(shi)代,如果电(dian)(dian)(dian)量告急,无法及时(shi)充(chong)(chong)(chong)电(dian)(dian)(dian),可(ke)能带(dai)来(lai)“电(dian)(dian)(dian)量焦虑”。应运(yun)而生的共享充(chong)(chong)(chong)电(dian)(dian)(dian)宝,满足了消(xiao)费者(zhe)(zhe)(zhe)(zhe)的应急之需。但同时(shi),不(bu)(bu)少(shao)消(xiao)费者(zhe)(zhe)(zhe)(zhe)反(fan)映(ying)共享充(chong)(chong)(chong)电(dian)(dian)(dian)
如果(guo)按照应用(yong)场(chang)景(jing)将电池(chi)(chi)分类的(de)话,可分为消费(fei)级(ji)电池(chi)(chi)、动(dong)力电池(chi)(chi)和储(chu)(chu)能(neng)(neng)电池(chi)(chi)三大(da)类,那(nei)么(me)动(dong)力电池(chi)(chi)和储(chu)(chu)能(neng)(neng)电池(chi)(chi)的(de)区别到底是什(shen)么(me)呢(ni)?具体(ti)内容如下:1、应用(yong)场(chang)景(jing)不(bu)同动(dong)力电池(chi)(chi)主要应用(yong)于新能(neng)(neng)源(yuan)汽车、电动(dong)自行车、电动(dong)列(lie)车等(deng)交通(tong)工具,而储(chu)(chu)能(neng)(neng)电池(chi)(chi)则多作为太阳能(neng)(neng)发(fa)电、风力发(fa)电、
锂电(dian)(dian)池的(de)充放电(dian)(dian)性(xing)能会(hui)(hui)受到温度(du)(du)的(de)影响,其(qi)电(dian)(dian)化(hua)学反应(ying)与环境温度(du)(du)有(you)关,电(dian)(dian)极/电(dian)(dian)解液(ye)界(jie)面被(bei)视为(wei)电(dian)(dian)池的(de)心脏(zang)。低温会(hui)(hui)降(jiang)低电(dian)(dian)解质粘度(du)(du)、电(dian)(dian)导率、活(huo)性(xing)物质的(de)活(huo)性(xing),使电(dian)(dian)解液(ye)的(de)浓度(du)(du)差变(bian)大,极化(hua)增(zeng)强,使充电(dian)(dian)提前终止。温度(du)(du)的(de)降(jiang)低,还会(hui)(hui)使电(dian)(dian)极反应(ying)速度(du)(du)下降(jiang)。如果电(dian)(dian)池电(dian)(dian)压(ya)不(bu)变(bian),放电(dian)(dian)
聚(ju)合(he)物(wu)(wu)软包锂电(dian)池(chi)的(de)性能优势(shi)1、体(ti)积小,可以(yi)做的(de)更(geng)薄,聚(ju)合(he)物(wu)(wu)软包锂电(dian)池(chi)厚(hou)度可以(yi)做到1mm以(yi)内,满(man)足(zu)现在手(shou)机(ji)的(de)需求。2、大容量(liang):聚(ju)合(he)物(wu)(wu)软包锂电(dian)池(chi)比(bi)(bi)同尺寸的(de)钢(gang)(gang)壳电(dian)池(chi)容量(liang)高10-15%,比(bi)(bi)铝壳电(dian)池(chi)容量(liang)高5-10%。3、重量(liang)轻:重量(liang)比(bi)(bi)同等容量(liang)规格的(de)钢(gang)(gang)壳锂电(dian)池(chi)轻